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  1. serendepidy

    Steam Turbine Deposits

    There is a very interesting story, probably the subject of a journal article when I get time to write it up. However, I dont think I would be doing my stakeholders any favours by elaborating in a public forum, sorry.
  2. serendepidy

    Steam Turbine Deposits

    We have done that previously, swabbed the sample and tested for chloride using murcuric thoicyanate and ferric ion. However, I am looking for a repeatable test method that can is commonly accepted as being the industry standard. I need this so that the sampling method and analysis is not...
  3. serendepidy

    Steam Turbine Deposits

    Hi All, Have a 160 MW steam turbine that has been exposed to steam contaminated with seawater. Am interested in advice for how to sample and analyse salt deposits on the turbine and the typical limits for salt levels on turbines to determine whether cleaning is necessary. Any help would be...
  4. serendepidy

    Improvised Cathodic Protection

    We have had a failure on our plant. In order to restart we have had to replace an elbow in a 150 NB CL 150 epoxy piping run, with a SS316 elbow with carbon steels flanges. The pipeline holds relatively stagnant seawater in a vacuum line. I would like to improvise a cathodic protection system...
  5. serendepidy

    Bitumen Blowing Tower Emissions

    We run a bitumen blowing tower producing emissions of dioxins and PAH's, which we exhaust to an incinerator. The incinerator is reaching retirement and we are looking at employing worlds best practice to remove the toxic compunds from the blowing tower exhaust. Is there best thing to do to build...
  6. serendepidy

    Boiler feed water pH to Boiler water pH

    Generally this depends on what chemical/s you are dosing and what type of plant configuration you have. If you have condensate polishers, Na slip on the cation resin will occur over time; if you are not regening them frequently enough NaOH will accumulate in the boiler water via the feedwater to...
  7. serendepidy

    Bitumen Flux Splitting

    I have just started work on a project to install bitumen splitter from imported bitumen flux. Can anyone who operates one please provide with a rundown on how they work ?
  8. serendepidy

    Bitumen Certification using online instrumentation

    Our refinery is searching for an online automated instrument to measure viscosity of its vacuum residue used for bitumen manufacture. We would preferably measure the viscosity straight off the Vacuum distillation column however the temperature at this measurement point would be around 400 deg C...
  9. serendepidy

    Fuzzy white stuff on Aluminium Clamps

    We have some aluminium clamps on some water cooled cables which carry electrical energy from a 200 MW generator to a transformer for distribution. There is a white crystalline substance that has formed on the clamps, it appears to be a fine threaded substance resembling spider web rolled into...
  10. serendepidy

    Why has my gas turbine lube oil gone black.

    I run a gas turbine compressor station on a large gas pipeline. The lube oil on the gas tubines on two stations have gone black in colour. The oil checks out otherwise, regarding every component of it's specification, temperature has bone monitored and particle count checks out. We would like to...
  11. serendepidy

    Seawater induced pitting of SS316L

    Does anyone think the rate of this corrosion mechanism could be exacerbated by MIC. This is a seawater system. We have decided to use fibreglass filter to replace the SS316L from service. This seems the cheapest options. Any other cheap options ?
  12. serendepidy

    Seawater induced pitting of SS316L

    I have a filter constructed from SS316L. It has experienced severe pitting around the sealing faces above and below the gasket. How can I alleviate the situation to reduce the rate of pitting ? Should coatings be used or cathodic protection ? What is the best way to rebuild the face of the...
  13. serendepidy

    Biological control for Gas Turbine Fogging feedwater.

    I am a team member managing a gas turbine plant of around 500 MW and have recently had a fogging system installed and associated 1000 ton tank for water storage. We only plan to run the fogging during peak periods and store the water for use as required. The OEM has stated that we must drain the...
  14. serendepidy

    Boiler Tube Preservation

    We have alot of boiler tube left over from commissioning of our HRSG and would like to preserve it for use in the future. Does anyone have any advise about what is the best method to do this ?

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